On the surface diffusion of adsorbable gases through porous media

1 May 1977

journal article
research article
Published by Wiley in AIChE Journal

Vol. 23 (3) , 347-352
https://doi.org/10.1002/aic.690230319

Abstract

A model is proposed for the hopping mechanism of surface diffusing molecules, adsorbed on porous solids, which allows a simple calculation of the mean hopping distance as a function of surface coverage.Surface permeabilities calculated with this model are compared to new experimental data. A satisfactory agreement is obtained, and the values of the parameters involved turn out to be very reasonable.

Keywords

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